Most of the surgical hats are made up of fabric, and hence can be washed and reused. However, there are some disposable surgical hats available in the market for those functioning in extremely contagious or hazardous areas where it might not be ideal (or desirable) to reuse a surgical hat. Disposable surgical caps are an ideal fit if you work in highly infectious environments. http://www.zojemedicalproduct.com/disposable-surgical-clothing-for-medical-use/

Portability refers to an object's ability to be moved, operated, stored, and/or carried. Portable shopping carts, then, are designed to be easily transported and take up as little space as possible. Striking the balance between functionality and portability can be challenging, though, especially if your store sells a number of large, heavy items. Still, certain features can enhance shopping cart portability without sacrificing their main function - to carry a certain capacity of products. http://www.tengtrolley.com/shopping-cart/

This clock uses two separate bulbs with a granular material inside and an opening connecting the two bulbs. This means that the granular material/ sand would fall down on the bulb down below due to the mere effect of gravity. However, there have been variations in hourglasses too that were made over time. For instance, though hourglass clocks have always been in ampoule shape, their bulbs were not always connected. http://www.skyringecraft.com/sand-timer-hourglass/acrylic-sand-timer/

Measuring the light transmittance and optical density values of Polyimide films is necessary. It is recommended to use Linshang LS117 densitometer for the measurement of Polyimide film light transmittance. LS117 densitometer use diffuse transmission principle, which is very suitable for measuring frosted materials, opalescent and translucent materials. The instrument conforms to the CIE photopic function standard. http://www.shunxuan-pi.com/biaxial-oriented-polyimide-film/

Apart from adapter, you may also neef a suitable power supply. The commonly used power supply, with electronic circuits is the line operated power supply. In this the mains voltage is utilized in a transformer or directly, to work a rectifier. The rectified output, will be filtered using a filter circuit, that eliminates the ripple content of the rectified output. The output of the power supply will be pulsating unidirectional current. http://www.shengjipower.com/ac-dc-adapter/65w-max-desktop-power-supply/

Vacuum sealing is the process of sealing a container with a vacuum. Vacuum Sealing Machines help remove air from containers before packing by creating a vacuum inside the containers to prevent air from entering and spoiling the food, thus ensuring that products remain fresh for long-term storage. Besides, there are many other kinds of packaging machines like fine-art industrial packaging machine, pulp industrial packaging machine and so on. http://www.pulpmouldmachine.com/industrial-package-machine/fine-art-industrial-packaging-machine/

API and raw material are often confused due to the similar usage of the two terms. What is the difference? Raw material refers to chemical compounds that are used as a base to make an API. The API is not made by only one reaction from the raw materials but rather it becomes an API via several chemical compounds. The chemical compound which is in the process of becoming an API from a raw material is called an intermediate. http://www.nmn-bio.com/biological-api/

Except for these there types, there are also many other flowmeters like electromagnetic flowmeter, vortex flowmeter, turbine flowmeter, ultrasonic flow meter, orifice flowmeter, metal tube rotameter, etc. And various of device is used for measuring as well, for example there are pressure transmitters and differential pressure transmitters, ultrasonic level gauge and radar level gauge and flow totalizer. http://www.jyflowmeter.com/electromagnetic-flow-meter/

Woven bags are reusable and recyclable but they are more labour intensive and it takes more energy to create them. This means that they’re not the most ecologically friendly bags available to you. Instead, opt for Non Woven bags. First manufactured in China, they’re made from spun bond non-woven polypropylene (PP) cloth. The material looks and feels like cloth, but it doesn’t need to be woven – making it a more economically sound option. http://www.eggrollshoes.com/

Plastic Cosmeticbottles are cheap, transparent, airtight, and easy to mold with good compressive strength. They not only solve the bottle shape design, safety, transportation and other issues of glass containers, but also avoid the shape design and opacity of metal containers. Many of the above characteristics make Plastic Cosmetic bottles more and more widely used in cosmetic packaging. http://www.amyptpackaging.com/cosmetic-bottles/plastic-cosmetic-bottles/